Carriage-feed mechanism for lathes.



No. 854,532. PATENTED MAY 21, 1907.

W. RUNGE. CARRIAGE FEED MECHANISM FOR LATHES. APPLICATION FILED AUG, 21,1906.

Z SHEETS-SHEET 1.

@327 J My PATENTED MAY 21, 1907.

WMRUNGB. GARRIAGE FEED MECHANISM FOR LATHES.

APPLICATION FILED AUG. 21, 1906.

2 SHEETS-SHEET 2.

all? y fi M MW a 9 W d w m v A Z50 rn/eys WILLIAM RUN GE, OF SENECAUNITED STATES PATENT CFFTGE.

FALLS MANUFACTURING FALLS, NEW YORK, ASSIGNOR TO THE SENECA COMPANY, OFSENECA FALLS, NEW YORK.

CARRIAGE-FEED MECHANISM FOR LATHES.

Specification of Letters Patent.

Patented May 21, 1907.

Application filed August 21,1906. Serial 170,331,545.

T aZZ whom, it may concern.-

Be it known that 1, WILLIAM RUNGE, a citizen of the United States,residing at Seneca Falls, in the county of Seneca and State of New York,have invented a new and useful Improvement in Carriage-Feed Mechanismsfor Lathes, of which the following is a specification.

This invention relates to feed mechanisms for the tool carriages oflathes and the like.

The ordinary screw-cutting lathe is provided with a power-driven feedshaft or lead screw, and the carriage is moved longitudinally along thebed forfeeding the tool lengthwise of the work, either by the directconnec tion of a feed device or screw nut on the carriage with the feedshaft or screw, or by gearing connecting the carriage with a toothedrack on the lathe bed and operated by hand or by power, and the crossslide is also operated to feed the tool crosswise of the work by gearingoperated by hand or by power, de-. pending upon the movement of the toolrequired for the work being performed. When either the cross orlongitudinal power-driven gear feed is used the screw feed must bethrown out of action, and vice versa when the screw feed is used thecross and longitudinal power-driven gear feeds must be thrown out ofaction to prevent injury to the lathe or work.

One of the primary objects of this invention is to provide lathes withreliable means of simple construction whereby neither the longitudinalnor cross gear feed can be poweroperated when the other or screw feed isin operation, but whichenables either gear feed to be employed when saidother or screw feed has been thrown outlof action.

Another object of the invention is to construct the feed mechanism sothatzthe hand crank or device for feeding thelcarriage longitudinallywill not be rotated while the' carriage is being operated by the screwfeed.

In the accompanying drawings, consisting of two sheets: Figure 1 is afront elevation of a carriage feed mechanism embodying the invention,the carriage apron being omitted and indicated by broken lines, toexpose the parts in rear thereof. Fig. 2 is a plan View of the feedmechanism and a portion of the carriage, the top of the carriage beingomitted to expose the underlying parts. Fig. 3 is a fragmentary frontelevation of the feed mechanism, showing a diiferent' position of theparts thereof from that shown in Fig. 1. Figs. 4, 5, 6 and 7 arefragmentary trans- I verse sectional elevations of the carriage and feedmechanism, in lines 44, 55, 66 and 7 7, respectively, Fig. 1.

Like letters of reference refer to like parts in the several figures. 1l

A, B, C, D, E represent, respectivelyfportions of the bed, toolcarriage, power-driven feed shaft or lead screw, cross feed screwshaft,and toothed rack of the longitudinal gear feed of a screw cutting lathe.These parts may be of any usual or suitable construction andarrangement.

F represents the screw-threaded nut or feed device on the carriage forengagement with the feed shaft or screw to feed the carriagelongitudinally. In the construction shown, this nut is of the ordinaryconstruction consisting of two threaded halves or sections carried byslides f f see Figs. 2 and 7, which are confined in waysf on thecarriage and are moved toward and from each other by a cam lever Ghaving cam slots 9 into which extend pins g on the slides. By swingingthe lever in one direction the nut sections are closed about the feedshaft or screw so that the carriage is fed longitudinally by thethreaded engagement of the nut with the screw, while by swinging thelever in thefopposite direction the nut sections are opened ordisengaged from the screw so that the carriagefifgwillfggremainstationary. The described construction of the screw-feed device and itsoperating means is old and this or any other suitable construction canbe employed.

The gearing shown for feeding the carriage longitudinally and the crossslide transversely is as follows: I-I, Fig. 2, represents the usual wormwhich is journaled and held from endwise movement on the carriage in -fabearing it thereon, and loosely surrounds the feed shaft, being splinedthereto, so that the worm will be turned by the shaft but can movelongitudinally thereon in the travel of the carriage. The worm drives aworm wheel h secured to a shaft 72?, and this worm wheel is adapted tobe connected either to a longitudinal feed l traiiflof gear wheels i i ii i '5', mounted on the carriage, the last of which gear wheels 11meshes with the toothed ated by a spindle suitable clutch or means couldbe used for gear wheels k k k k 76*, the last of which 1 Wheels issecured to the cross feed screw D. The gear wheels i and 7c of thelongitudinal and cross feed trains are normally loose on the worm wheelshaft 7%, so that neither train Will be operated by the rotating wormand l worm wheel, and a suitable clutch L, oper- Z, see Fig. 6, isprovided for connecting these wheels separately, as dearts.

sired, to the worm wheel shaft. This clutch The two movable gear wheels76 are emis fully described in U. S. Letters Patent No. ployed in thecross feed train instead of a sinthe invention is not limited tothisconstruction, the idea being simply to operate the gear carrier toshift the gears carried thereby when the feec :device is operated,whether the gear carrier is connected to the feed device or itsoperating means, and irrespective of the particular operativeconnections between the 766,529, issued August 2, 1904, to myself as glewheel as thereby the cross feed screw is assignor to The Seneca FallsManufacturing turned in the customary direction 111 the op- Company, andit is suflicient for the purposes eration of the crosssl1de. A singlemovable of this application to state that the clutch wheel could beused, but with a reverse opercan be operated to connect the wheel i ofthe ation of the cross feed screw. longitudinal feed gear train, or thewheel 70 Of The usual crank or handle N for feeding the cross feed geartrain to the worm wheel the carriage lengthwise by hand is preferablyshaft h accordinglyzas it is desired to feed the secured to the shaft nof the shiftable gear carriage lengthwise or the cross slide crosswheeli of the longitudinal feed train, as Wise with respect to the work. Anyother thereby the hand crank will be thrown out. of

gear with the toothed rack E with said shiftable gear wheel and will nottherefore be revolved so as to strike the mechanic or catch in and tearhis clothing when the carriage is fed longitudinally by the feed shaftand device. Thus a source of considerable annoyance in lathes isobviated. The shaft n of the hand crank passes through and is supportedby a hollow post 0, Figs. 2 and 4, secured to the gear carrier andprojecting forwardly therefrom through a hole p in the carriage apron.This post has a flange or collar 1) which bears against the front faceof the apron and serves to steady and guide the gear carrier.

I claim as my invention:

1. In a lathe or the like, the combination of a tool carriage, a drivenfeed shaft, a feed device for operatively connecting the carriage withsaid. shaft to feed the tool, feed gear trains for producing differentmovements of the tool, a movable part connected to be operated with saidfeed device, one or more gears of each of said gear trains being shiftedby said movable part into and out of operative position whereby both ofsaid gear. trains are together made operative or inoperative, and meansfor placing one of said gear trains into and out of action independentlyof the other, substantially as set forth.

2. In a lathe or the like, the combination of a tool carriage, a drivenfeed shaft, a feed device for operatively connecting the car riage withsaid shaft .to feed the tool, longitudinal and cross feed gear trainsfor the tool, a movable part connected to be operated with said feeddevice, one or more gears of each of said gear trains being shifted bysaid movable part into and out of operative position whereby both ofsaid gear trains are together made operative or inoperative, and meansfor connecting one of said gear trains independently of the other tosaid'gfeedlshaft, substantially as set forth.

connecting the feed jltrains separately to the feed shaft. Except ashereinafter described, the gear trains for the longitudinal and crossfeeds are of well known construction and arrangement and any othersuitable gear trains could be employed in place of those illustrated. Mrepresents a part, plate or gear carrier which supports one or more ofthe gear wheels of each feed train and is movably mounted on thecarriage and connected to the screw feed nut or device, or its operatingmeans, so as to move the gears carried thereby out of operative relationto the other gears of their respective trains when the feed de-. vice isengaged with the feed shaft, and to restore said gears to operativerelation to their respective trains when the feed device is disengagedfrom the feed shaft. Preferably the gear carrier or part is pivoted tothe carriage concentrically with the worm wheel shaft 71/ by a hollowpost or trunnion m loosely surrounding said worm wheel shaft in abearing boss m on the carriage apron, see Fig. 6, and one end of thegear carrier has a slot m into which extends a pin m Figs. 1, 3 and 7,on the slide for the lower section of the feed nut. The gear wheels i ofthe longitudinal feed train and k k of the cross feed train arejournaled on shafts mounted on the gear carrier and located as shown inthe drawingsflso that when the feed device F is open or disengaged fromthe feed shaft these gears will mesh with the adjacent gears of theirrespective trains, as shown in Fig. 1, whereas when the feed device ornut F is closed on or engaged with the feed shaft the gear wheel i ofthe longitudinal feed train will be moved out of mesh with its com aniongear wheel i and the gear wheels 7c 11 of the cross feed train willlikewise be moved out of mesh with their companion gear wheels k W, asshown in Fig. 3.

The gear carrier is shown to be connected directly to one of the feednut sections, but

3. In a lathe or the like, the combination of a toolicarriage, a drivenfeed shaft, a feed device for operatively connecting the carriage Withsaid shaft to feed the tool, feed gear trains for producing differentmovements of the tool, a movable part operated by said feed device, oneor more gears of each of said gear trains being shifted by said movablepart into and out of operative position Whereby both of said gear trainsare together made operative or inoperative, a drive member common toboth of said gear trains and driven by said feed shaft, andl alclutchfor connecting either of said gearj ftrains independently of the otherto said common drive member, substantially as set forth.

4. In a lathe or the like, the combination of a tool carriage, a drivenfeed shaft, a feed device for operatively connecting the car riage Withsaid feed shaft to feed the tool, a gear train for feeding the carriage,a movable part connected to be operated with said feed device, a gearWheel of said gear train being shifted by said movable part into and outof operative position, a hand-operating device for said gear train, andmeans whereby said hand-operating device is rendered inactive by themovement of said movable part, substantially as set forth.

5. In a lathe or the like, the combination of a tool carriage, a drivenfeed shaft, a feed device for operatively connecting the carriage withsaid feed shaft to feed the tool, a gear train for feeding the carriagelongitudinally, a movable part operated by said feed device, a gearWheel of said gear train being shifted by said movable part into and outof operative position, and a shaft for said shiftable gear Wheelprovided with a hand-operating device for said gear train, substantiallyas set forth.

6. In a lathe or the like, the combination of a tool carriagefa drivenfeed shaft, a feed device for operatively connecting the carriage Withsaid feed shaft to feed the tool, a gear train for feeding the carriagelongitudinally, a pivoted gear carrier operated by said feed device, oneof the gear Wheels of said gear train being mounted on said gear carrierand shifted thereby into and out of operative position, and a shaft forsaid shiftable gear Wheel provided with a hand crank for said geartrain, substantially as set forth. Witness my hand, this 14th day ofAugust, 1906.

WILLIAM RUNGE.

Witnesses:

P. B. KENDIG, A. S. DAVIS.-

